メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.848929748266 43.3334197826121, 141.849191134761 43.3342862852609, 141.847448448009 43.3345644325106, 141.846765687201 43.3346734274548, 141.846476636503 43.3347195281569, 141.844500345139 43.335034930717, 141.844108108342 43.3336688480343, 141.844822417334 43.3336222161463, 141.845115564758 43.3336010993451, 141.845466258121 43.3335384099765, 141.845882929471 43.3334082275587, 141.846979311746 43.3329721239444, 141.847300105809 43.3328445535254, 141.848567142658 43.3323405363723, 141.848602854947 43.3323263143136, 141.848813989716 43.3330359525689, 141.848929748266 43.3334197826121)) ^^http://www.opengis.net/ont/geosparql#wktLiteral